Approximately 100 occupants were evacuated from the Royal Australian Mint this morning.
At approximately 10am, ACT Fire & Rescue responded to an automatic fire alarm that was triggered by a release of gas through a chemical reaction.
HAZMAT crews conducted atmospheric monitoring and air ventilation operations to ensure the area is safe. The building is now in the process of being reoccupied.
ACT Ambulance Service paramedics assessed one patient on scene, transport to hospital was not required.
There is no risk to the public or surrounding area.